Having either machine at home allows premade Sims to access the tattoo interface of Create a Sim. Placing The Ink-in-Comfort 3000 on a community lot will generate a tattoo artist NPC with tattooed arms and heavy eyeliner. There are two kinds of tattoo chairs in the game, The Ink-in-Comfort 3000, and The Digital Tattoo Applicator. Tattoos are purely cosmetic and do not affect gameplay. Players can upload and share these tattoos on the Exchange, giving the community yet another creative outlet. Players are be able to apply multiple tattoos in up to five layers, scale them, change the colors, and even modify opacity. The tattoo system is part of Create a Sim, and it allows players to place designs on a Sim's upper, lower, or full back, or their neck, ankle, chest, stomach, wrist, shoulder, biceps, or forearm. Tattoos were introduced in the patch that accompanied The Sims 3: Ambitions, and reintroduced in The Sims 4.
